Usually if you want it gravity-fed you need water towers to generate the needed pressure for the immediate area. Then you also likely still need some pumps to cover more area. The pumps don't work when the power is out, thus very low water pressure or straight up no water.
Usually if you want it gravity-fed you need water towers to generate the needed pressure for the immediate area. Then you also likely still need some pumps to cover more area. The pumps don't work when the power is out, thus very low water pressure or straight up no water.
The water also won't flow when the pipes have been bombed into scrap.